copr_hypervisor: we need to keep iptables on RHEL 8 machines

https://pagure.io/fedora-infrastructure/issue/12531

inventory/host_vars/vmhost-p08-copr01.rdu-cc.fedoraproject.org

@@ -22,6 +22,7 @@ mac4: "40:f2:e9:5d:50:f8"
 mac5: "40:f2:e9:5d:50:f9"
 mac6: "40:f2:e9:5d:50:fa"
 mac7: "40:f2:e9:5d:50:fb"
+nftables: false
 network_connections:
   - autoconnect: yes
     ip:

inventory/host_vars/vmhost-p08-copr02.rdu-cc.fedoraproject.org

@@ -22,6 +22,7 @@ mac4: "40:f2:e9:5d:53:5c"
 mac5: "40:f2:e9:5d:53:5d"
 mac6: "40:f2:e9:5d:53:5e"
 mac7: "40:f2:e9:5d:53:5f"
+nftables: false
 network_connections:
   - autoconnect: yes
     ip:

inventory/host_vars/vmhost-x86-copr01.rdu-cc.fedoraproject.org

@@ -19,6 +19,7 @@ mac4: "b4:96:91:63:3b:e8"
 mac5: "b4:96:91:63:3b:e9"
 mac6: "b4:96:91:63:3b:ea"
 mac7: "b4:96:91:63:3b:eb"
+nftables: false
 network_connections:
   - autoconnect: yes
     ip:

inventory/host_vars/vmhost-x86-copr02.rdu-cc.fedoraproject.org

@@ -17,6 +17,7 @@ mac2: "b4:96:91:63:3b:9c"
 mac3: "b4:96:91:63:3b:9d"
 mac4: "b4:96:91:63:3b:9e"
 mac5: "b4:96:91:63:3b:9f"
+nftables: false
 network_connections:
   - autoconnect: yes
     ip:

inventory/host_vars/vmhost-x86-copr03.rdu-cc.fedoraproject.org

@@ -19,6 +19,7 @@ mac4: "b4:96:91:63:3b:50"
 mac5: "b4:96:91:63:3b:51"
 mac6: "b4:96:91:63:3b:52"
 mac7: "b4:96:91:63:3b:53"
+nftables: false
 network_connections:
   - autoconnect: yes
     ip:

inventory/host_vars/vmhost-x86-copr04.rdu-cc.fedoraproject.org

@@ -19,6 +19,7 @@ mac4: "b4:96:91:63:3a:a0"
 mac5: "b4:96:91:63:3a:a1"
 mac6: "b4:96:91:63:3a:a2"
 mac7: "b4:96:91:63:3a:a3"
+nftables: false
 network_connections:
   - autoconnect: yes
     ip: